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A protocol for large scale genomic DNA isolation for cacao genetics analysis

Ferreira Santos Rogério Mercês, Vanderlei Lopes Uilson, Clément Didier, Pires José Luis, Matos Lima Eline, Batista Messia Tamiles, Peres Gramacho Karina. 2014. A protocol for large scale genomic DNA isolation for cacao genetics analysis. African Journal of Biotechnology, 13 (7) : pp. 814-820.

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Abstract : Advances in DNA technology, such as marker assisted selection, detection of quantitative trait loci and genomic selection also require the isolation of DNA from a large number of samples and the preservation of tissue samples for future use in cacao genome studies. The present study proposes a method for the preservation of sample tissues for DNA extraction and for manual extraction of large number of samples using spheres. The integrity and concentration of the DNA by these methods were assessed and compared with conventional method using mortar. The best parameters in order to obtain a fine powder using spheres was the use of 4 lyophilized leaf disks (50 mg), a single steel ball of 6 mm in diameter, followed by 30 s of manual maceration. The quantity of DNA obtained was four times higher than the conventional method. The purity of the DNA obtained was satisfactory and proved to be amplifiable by PCR using SSR primers. The present approach is a reliable, rapid, simple and consistent DNA isolation method for cacao, compared to the conventional methods. The protocol greatly increases the efficiency of extraction and suggests an inexpensive and practical way of DNA isolation of cacao for large scale. (Résumé d'auteur)

Mots-clés Agrovoc : Theobroma cacao

Mots-clés géographiques Agrovoc : Brésil

Classification Agris : F30 - Plant genetics and breeding

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Ferreira Santos Rogério Mercês, CEPEC (BRA)
  • Vanderlei Lopes Uilson, CEPEC (BRA)
  • Clément Didier, CIRAD-BIOS-UMR AGAP (BRA) ORCID: 0000-0002-7602-6472
  • Pires José Luis, CEPEC (BRA)
  • Matos Lima Eline, CEPEC (BRA)
  • Batista Messia Tamiles, CEPEC (BRA)
  • Peres Gramacho Karina, CEPLAC (BRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/575031/)

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